\documentclass[11pt,letterpaper]{report}
\usepackage{UNLV_ECE}
\usepackage{array}
\usepackage{multirow}
% \usepackage{ctable}
\usepackage{booktabs}

\newcommand{\mc}[3]{\multicolumn{#1}{#2}{#3}}
\newcommand{\mr}[2]{\multirow{#1}*{#2}}

\begin{document}
\begin{table}\label{tbl:my_funky_table}
\begin{center}
 \caption{My Funky Little Table}
 \begin{tabular}{ccccccccc}\toprule
\mr{2}{Trial ($n$)} &
\mc{7}{c}{Experimental Factors} & 
\mr{2}{$J_{n}(\textbf{x})$} \\ 
&
$\textbf{x}_1$ &
$\textbf{x}_2$ &
$\textbf{x}_3$ &
$\textbf{x}_4$ &
$\textbf{x}_5$ &
$\textbf{x}_6$ &
$\textbf{x}_7$ & \\ \midrule 
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 & 4 \\ 
2 & 1 & 1 & 1 & 0 & 1 & 1 & 1 & 6 \\ 
3 & 1 & 0 & 0 & 1 & 0 & 1 & 1 & 4 \\ 
4 & 1 & 0 & 0 & 0 & 1 & 0 & 0 & 2 \\ 
5 & 0 & 1 & 0 & 1 & 0 & 0 & 1 & 4 \\ 
6 & 0 & 1 & 0 & 0 & 1 & 1 & 0 & 2 \\ 
7 & 0 & 0 & 1 & 1 & 0 & 1 & 0 & 4 \\ 
8 & 0 & 0 & 1 & 0 & 1 & 0 & 1 & 2 \\ \bottomrule
\end{tabular}
\end{center}
\end{table}
\end{document}